package cn.tedu._03vehicle.base.interceptors;

import cn.tedu._03vehicle.pojo.vo.UserVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

@Slf4j
@Configuration
public class LoginCheckInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        log.debug("进入登录检查拦截器：");
//HttpServletRequest  中封装了诸多请求的相关信息
        // 获取当前会话
        HttpSession session = request.getSession();
        UserVO userVO = (UserVO) session.getAttribute("user");
        // 检查会话中是否存在用户信息
        if (userVO == null || session.getAttribute("user") == null) {
            log.debug("用户未登录，重定向到登录页面");
            // 重定向到登录页面
            response.sendRedirect("/login.html");
            return false;
        }
        log.debug("用户已登录，继续处理请求");
        return true;
    }

}
